ARuri.IIi.K OF THE WOODS HOLE REGION. 



127 



Found upon the ventral surface of Fundulua heteroclitus and Fundulus majalis in both sail and 

 brackish water; prefers the neighborhood of the tins: usually only one <>n a single tish ; also likely to 

 be taken in the tow during the breeding season. Deposits its eggs in July and October. Larvae 

 unknown. 



Argulus laticauda Smith. Male and female known. 



Carapace elliptical, longer than wide, just reaching the edge of the abdomen in the male; antero- 

 lateral sinuses well-defined, leaving a large frontal lobe; posterior sinus wide and deep. Eves large. 



i mlus laticatida Smith. Male, a, Dorsal surface: b, ventral surface; c, first and second antenna ri posterior maxilliped 



e, two posterior swimming legs of female. 



chit in rings in the lateral areas concealed by the abundant black pigment. Abdomen orbicular, 

 slightly longer than wide, cut less than on, '-third; anal papillae basal. Antenna' large and stoutl) 

 armed; sucking discs small; posterior maxillipeds me, Hum size, stout, with a fringe of spines along the 

 entire posterior margin. Basal plate elongate and narrow, its posterior edge cut into three oblong, 

 squarely truncated lobes instead of teeth. Two anterior pairs of swimming legs with recurved flagella 

 and entirely covered by the carapace; lobes on the posterior pair long and pointed. l„,ot-shape,l. 

 .Males much larger than any females so far obtained, and with a conical projection on the anterior border 



